- Tails could not exist without [[Debian|https://www.debian.org/]], [[Debian Live|http://live.debian.net]], and [[Tor|https://www.torproject.org/]]; see our [[contribute/relationship with upstream]] document for details.

- Tails was inspired by the [[Incognito LiveCD|http://web.archive.org/web/20090220133020/http://anonymityanywhere.com/]]. The Incognito author declared it to be dead on March 23rd, 2010, and wrote that Tails "should be considered as its spiritual successor".

- The [[Privatix Live-System|http://mandalka.name/privatix/]] an early source of inspiration, too.